Hi,
I don't have 2013 now, so I tried it with AutoCAD 2014.
What I see is duplicating the layout creates a defect copy of the upper-right viewport.
When I delete this one viewport and do then a copy all works well ==> is that the same for you?
I can't get the drawing repaired, _AUDIT and _RECOVER find some issues, but repairing them do not solve your defect viewport.
If you delete this one viewport and create a new one it should work.
Whatever happended here, I don't know. If there was a software/application on top of AutoCAD which created that layout and the viewports I would say this should be investigated, because technically behind the paperspace is always one invisible viewport, maybe the addon mixed something up here.
- alfred -
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Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ...
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CDay 2026------------------------------------------------------------------------------------
(not an Autodesk consultant)